The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 05, 2019
Filed:
Nov. 07, 2014
Prysmian S.p.a., Milan, IT;
João Carlos Vieira Da Silva, Milan, IT;
Evandro Lee Anderson Spìnola De Souza, Milan, IT;
Valeria Garcia, Milan, IT;
João Batista Rosolem, Campinas, BR;
Claudio Floridia, Campinas, BR;
Marcos Antonio Brandão Sanches, Campinas, BR;
PRYSMIAN S.p.A, Milan, IT;
Abstract
A multimode optical fiber for continuous transmission of electromagnetic radiation at high power, wherein the fiber defines a fiber axis and includes a core and a cladding surrounding the core, and wherein the multimode optical fiber is a multimode graded-index fiber, the refraction index profile in the fiber essentially following formula (1): where Δ is formula (A), r is the distance from the fiber axis, n(r) is the nominal refractive index as a function of distance from the fiber axis, nis the nominal refractive index on the axis of the fiber, nis the refractive index of the cladding, a is the core radius, and g is a parameter that defines the shape of the profile, where the core diameter 2a is between 90 UM and 190 μM, the parameter g is between 1.2 and 1.8, and the numerical aperture (NA) of the fiber, formula (B), is between 0.2 and 0.3.